Linux

GRAND - 6Mbps USB True Random Number Generator

Submitted by GG on Sun, 02/28/2021 - 14:48

GRANDA good random numbers generator is fundamental to ensure the security of many modern data encryption algorithms. Depending on the workload, the entropy collected automatically by the kernel might not be sufficient to generate the random numbers at the requested rate. In these cases an external entropy source can greatly improve performance. GRAND is a USB TRNG (True Random Number Generator) based on the ST Microelectronics STM32.

Filed under: 
MCU
Linux

Installing Debian 9 on NVIDIA Jetson Nano

Submitted by GG on Thu, 05/16/2019 - 01:46

DebianWe recently acquired a NVIDIA Jetson Nano developer's kit. It's a great, low power, single board computer with plenty of CPU and GPU performance. The default NVIDIA image is based on Ubuntu 18.04 which is a fine distribution but does not fit nicely At GGLABS all our machines run debian and we started hacking at the nano to make fit our standards.

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Linux
Jetson

T232-A02 - Simple DB9 RS232 monitor and breakout board

Submitted by GG on Fri, 01/22/2016 - 15:25

A new version of this project is available here

T232RS232 monitors are quite common but most of them use the standard good old DB25 connectors. The majority of the RS232 ports in use today however use the smaller DB9 connector. This forces the use chains of adapters to get the commercial monitor/breakout boards working. The GGLABS T232 solves the problem by providing native DB9 connections.

Filed under: 
Retrocomputing
MCU
Linux
Windows

T232-A01 - Simple DB9 RS232 monitor and breakout board

Submitted by GG on Thu, 05/28/2015 - 16:10

A new version of this project is available here

T232RS232 monitors are quite common but most of them use the standard good old DB25 connectors. Most of the RS232 ports in use today however use the DB9 connector. This forces the use chains of adapters to get the commercial monitor/breakout boards working. The GGLABS T232 solves the problem by providing native DB9 connections.

Filed under: 
Retrocomputing
MCU
Linux
Windows

Matrox Millennium II Xv extension

Submitted by GG on Fri, 04/07/2006 - 13:56

DVD video on P3 This patch will enhance the X.org 7.1 Matrox Millennium II driver to support the X video (Xv) extension (extremely useful for playing DVDs and other video formats). The extension is implemented as a CPU to Frame Buffer YUV scaling ILOAD. A true overlay was not used because of a Millennium II hardware limitation that would reduce the maximum usable frame buffer to only 4Mb.

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Linux